1 Answer

The outside temp sending unit is located just behind the grill on the left side. The grill is real easy to pop out of it's attaching grommets by pulling evenly on the top...just be careful that once you get the top free that you don't let the grill tilt too far forward or it will snap the bottom plastic tabs that are inserted into slots. Once you get the top free, tilt the grill slightly forward and lift straight up. It should lift free real easily. The temp sensor is on the right as viewed from in front of the car. The top support frame is semi-square so look under it near the radiator and you should see a small short probe sticking through the metal. It's about 1/2" diameter and sticks out only about 1/2". It's actually installed from behind the semi-square frame with a push-through-snap-in-place plastic housing with a detachable plug on the back of it. You'll have to reach behind it...where the fan is and snake your hand in there to pull it out while squeezing the plastic snap-in-place tabs from the front. The wires should be long enough to pull it out to use both hands to unplug it. Now, take it to the dealer (that's the only place it's available unless you find it online) and get a replacement. Be careful though because they'll try to sell you an assembly that comes with a bracket that you don't need. I bought the one with the bracket because there was none in stock without the bracket but the cost was only a few dollars more. Anyway, I think it was only about $25. Reinstalling it was a lot harder than getting it out because you have
to twist your hand in a hard way but it just takes some patience to
blindly find the hole to push it into. A flashlight might help but
probably not. I read on a bulletin board somewhere that you would need to have it re-coded at the dealer but I didn't and it works fine. I think the temp read out on the mirror is a little off but it's close. I also read that the temp sensor is tied in with the A/C so it's important that it functions. All in all it was easy and no tools were needed...really. Hope this helps.

Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.

Attachments: Added items

Related Questions:

What is the outside air temperature when it locks up? Summer temperatures will cause it to lock up much sooner which is normal. If this is not the case you can get a replacement fan clutch at any auto parts store

Its usually a faulty temperature sensor. Its located to the left side of the rad behind the plastic covers. It may be directly in front of the rad attached to center bracket. Its a small black plastic sensor clipped to the bracket with 2 wires going to it. They can be replaced, no recalibration is needed. Sometimes it will appears as 3 dashes (- - - ) on the temp display.

Well the outside temperature gauge is generally not wired into the a/c. The internal temperature is more important but is not displayed as such. The 'internal' temperature sensor is used to regulate the a/c blending door and blower speed.

Same car, same problem. Press MODE, FRONT and REAR buttons together to reset tempreture. You probably need to replace the sensor GM part number 15047946 it is in the front grill email me for a picture. chris.abbott@gmx.com

Have you used the handy search feature? You would find that this is likely caused by one of 2 things. First, the ambient air temperature sensor may have gone bad. Secondly, wiring from the sensor to the mirror may have gone bad. Either way, you would get OC (which stands for OPEN CIRCUIT).
Found this solution on:http://forums.trailvoy.com/showthread.php?t=54333KQ3SYK